Lake Havasu City, AZ 86406 Frost Dates
86406, near Lake Havasu City, AZ: the frost window
The last spring frost here typically falls around 01/05, about 130 days from today. Fall's first freeze usually shows up around 12/29, roughly 365 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lake Havasu City in Zone 10a (30 to 35°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Lake Havasu City's growing season runs out in roughly 18 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Lake Havasu City's last frost
01/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/17 and only about 1 year in 10 sees frost after that.
Lake Havasu City against the rest of the dataset
Lake Havasu City's growing season runs about 365 days, ranking 780 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 12 of 506.
Learn more
Two guides worth reading on 86406: zone vs. frost date, on why Zone 10a and Lake Havasu City's frost date answer different questions, and the frost range, on how to read the range around Lake Havasu City's dates instead of trusting one.